Keg Coupler List: Picking the Right Coupler for Your Favorite Beer

A keg coupler is a key element of any draft beer system. It’s a small but vital piece of equipment that connects the gas and beer lines to your keg. Pressurized gas (either CO2 or nitrogen depending on the type of beer being dispensed) flows into the side of the keg coupler through an air line and the beer flows out through a beer line attached to the top.

Even though all keg couplers are similar in appearance and function, you’ll need to make sure you’ve got the right style for the keg you want to tap. Use the chart below to determine which keg coupler type corresponds with your favorite beer. Can’t find the beer you’re looking for? Ask your local distributor which coupler you should use!

To be honest, we are not quite sure. We did some research and couldn’t find anything either. I would suggest contacting them through this form – https://www.stiegl.at/en/contact. If you find out, let us know so we can add it to our list. Sorry about that, and we hope you’re able to find out!

Just tapped a keg of Stiegl Radler (Grapefruit) and it is a type S coupler. Initially tried a D and would get a slight spritz when opening the faucet after connecting with a D, but it wasn’t actually opening the valve, so had to switch to the S with the slightly longer probe.

I spoke with two of our draft beer experts and both suggested a D coupler. It has a shorter probe, and if you got sprayed with S, it was likely because the unengaged probe was hitting the keg valve. Definitely try a D, and let us know if that works!

Hi, Ron. Because beer comes from different distributors who may be selling different iterations of that beer, we recommend you contact the distributor from whom you are planning on buying it. They should be able to tell you which coupler to use.

They used a G coupler. The same that Fullers uses.By the way Fullers London Porter is the best and their ESB is untouchable,a bit pricey.I live in NYC and it cost about $250 for a 50 Liter, but if you can swing it you will never have another Bass.Their London Pride is only OK.

Why are there all these different connector types? Is it because every brewer wants some sort of “exclusivity” that only their beer can be served with a tap? Is it dependent on functionalities/the beer type?

I was told by my local beer distributor that kegs of Estrella Damm Lager, although they use an S coupler, are only for commercial use. They said there is no way to use them on a kegorator because of some limitation or control feature that prevents its use. Do any of you know anything about this.. I’ve never heard of anything like that.

I have a 30 litre keg of Stella Artois and when I connect the coupler nothing come out. Not sure if the Stella Keg takes a different coupler. The one I am using works OK for Alexander Keiths and on the chart it looks like a D. What should I try for the Stella Keg